year 8

• an oval represents a start or end point in a flowchart
• arrows are a connector that shows the direct flow in a flowchart
• a parallelogram represents a process such as a delay
• flowcharts are used to represent an algorithm, workflow or process
• a logical expression is something that can either be true or false
• in binary you can only use the digits 1 and 0
• a variable is used to store data for a computer program
• a string is text
• a worm is a malware that can spread from one computer to another by copying itself to other computers
• malware is a type of software that is designed to cause damage to a computer system or to steal private information
• an algorithm is a set of instructions that are followed to solve a problem
• layers are like stacked, transparent sheets of glass that can be moved, hidden or locked to help create a digital image
• a CPU runs the instructions and works out how to do them. every computer does is made up of lots of instructions.
• ROM stands for read-only memory. This means that once ROM has been programmed with an instruction, it cannot change.
• RAM stores data temporarily while it's being used. It's also called volatile memory because if there isn't any power going into your computer then everything stored in RAM will disappear.
• the motherboard connects all the components together so they work as a whole unit.
• a hard drive is where most of the programs on your computer are stored. It also holds any files you have created or downloaded.